[PREMIUM QUALITY] - Made of high quality engineering plastic, strong and sturdy, durable to use for a long time. Designed with shockproof plastic construction that ensures optimal durability and lightweight ease of use. [PERFECT ATTACHMENT] - Ergonomic design with the L-type and C-type clamps, you can effectively and easily attach a 90 degree right angle, keep the frame aligned, and adjust tools, such as picture frames, right angle frames, etc. [MULTI-ANGLE SCALES] - Both sides of squares positioning are marked with width scales. The scale value is clearly visible, allows you to accurately and quickly measure wooden boards or parts. Draw the lines and the perfect cut with 22.5°/45° scales. [WIDE APPLICATION] - Suitable for home, farm, workshop, professional use, to DIY woodworking, cabinet and furniture repair, picture frame reinforcement, DIY wood project, drilling, sawing, etc. Due to problems such as the light and different monitors, there may be color difference in color, please refer to the actual product, please understand Shipped Quantity: 3 pieces Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.